I work as I.T. for my wifes DX so I wanted to get this right before I get my hands on it. Before installing the new Yahoo mail app, should I delete the Yahoo account that is setup on her phone right now? Im afraid she will be double notified if I don't delete it. OR, when I install that app, it will use the account information that is on the phone right now. Thanks in advance for your help. I'm not sure if I was clear that she did not have the yahoo mail app before, I went into accounts, add account, selected yahoo mail and set it that way. So my question is, do I need to delete that account before installing the app.